. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. INTERTIDAL SNAIL RESPIRATION 187 L. OBTUSATA CM O .5. AQUATIC (NOBSKA) AQUATIC(MANOMET) AERIAL 10 15 20 25 30 35 40 45 TEMPERATURE in FIGURE 3. The effect of temperature on the aquatic and aerial oxygen uptake rates of Littorina obtusata. The vertical axis represents oxygen uptake rate in microliters of oxygen per milligram shelless dry tissue weight per hour; and the horizontal axis, temperature in degrees centigrade. The open circles represent the aquatic oxygen uptake rates; and the solid circles, the aerial o
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. INTERTIDAL SNAIL RESPIRATION 187 L. OBTUSATA CM O .5. AQUATIC (NOBSKA) AQUATIC(MANOMET) AERIAL 10 15 20 25 30 35 40 45 TEMPERATURE in FIGURE 3. The effect of temperature on the aquatic and aerial oxygen uptake rates of Littorina obtusata. The vertical axis represents oxygen uptake rate in microliters of oxygen per milligram shelless dry tissue weight per hour; and the horizontal axis, temperature in degrees centigrade. The open circles represent the aquatic oxygen uptake rates; and the solid circles, the aerial oxygen uptake rates of L. obtusata collected from Nobska Point. The open triangles represent the aquatic oxygen uptake rates of L. obtusata from Manomet Point. The vertical arrow indicates the approximate lethal temperature. Methods) had a respiratory rate which averaged less than that for speci- mens from Nobska Point through 25° C. Thermal death occurred at about 30° C in L. vincta from both the Manomet and Nobska Point populations, at ° C in M. lunata and at 35° C in A. tcstudinalis (Fig. 2). The effects of temperature on the oxygen uptake of A. tcstudinalis in air are similar to those which occur in aquatic respiration. However, oxygen consumption in air is markedly reduced from aquatic rates at all temperatures (Fig. 2) and may reflect the large quantity of mucus secreted over the body surface on exposure of these limpets to air. In air the oxygen consumption of A. tcstudinalis increases from a low rate at 5° C to a peak consumption rate at 25° C. However, the Qio of aerial oxygen uptake is very similar to that recorded for aquatic respira- tion at (Fig. 2). Between 5° and 35° C, aerial oxygen consumption in A. testudinalis is only of (or times less than) aquatic oxygen uptake rates over the same temperature span (Fig. 2). The patterns of oxygen uptake with increasing temperature in the three con- geners, Littorina obtusata, L. littorea and
Size: 1754px × 1425px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
